code: def _predict(self, X):
      pass
  
file_path: mlxtend/mlxtend/_base/tests/test_classifier.py
imports: import numpy
  import pytest
  from mlxtend._base import _BaseModel, _Classifier
label_desc: Use image node_id 3 for calling the BlankClassifier obj's underlying member method code with example usage: obj._predict(X) without return types